What is grep and how do you use it?
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What does mkdir up2date; touch outdated up2date do?
How do I search for text in vi?
What is ‘ps’ command for?
What is the functions of zambie process?
In UNIX, what is the command to kill a process?
What does touch command do in unix?
what is the shell for dos,nt operating systems?
how to find largest file?
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What command is used to check the current users?
Write a command that will output the sorted contents of a file named in.txt and place the output in another file named out.txt, while at the same time excluding duplicate entries.
What does find command return in unix?
what is exact definition of operating system?